5453450781 has 8 divisors (see below), whose sum is σ = 7273278240. Its totient is φ = 3634628592.

The previous prime is 5453450773. The next prime is 5453450803. The reversal of 5453450781 is 1870543545.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5453450781 - 2³ = 5453450773 is a prime.

It is a super-2 number, since 2×5453450781² = 59480250841579019922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5453450711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238566 + ... + 260423.

It is an arithmetic number, because the mean of its divisors is an integer number (909159780).

Almost surely, 2^5453450781 is an apocalyptic number.

It is an amenable number.

5453450781 is a deficient number, since it is larger than the sum of its proper divisors (1819827459).

5453450781 is a wasteful number, since it uses less digits than its factorization.

5453450781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502635.

The product of its (nonzero) digits is 336000, while the sum is 42.

The square root of 5453450781 is about 73847.4832407984. The cubic root of 5453450781 is about 1760.1802050547.

The spelling of 5453450781 in words is "five billion, four hundred fifty-three million, four hundred fifty thousand, seven hundred eighty-one".